The Riyadh Metro project is considered the largest public transportation project in Saudi Arabia. It is a huge endeavor to build the infrastructure in active and highly populated cities, without disrupting the day to day activities of its residents. Such a project happens once in a lifetime, and I'm very proud to have witnessed its beginning.
In November 2015, I was attracted by the cement blocks that organize detours and signs. I walk whenever my knee allows me to, and document what looks attractive to me. I know it appears to be a very strange personal project, but I think the content will be valuable to children in twenty years.